I think you might be referring to THROUGH THE WIRE.  It's about three women
who were convicted of politically-motivated non-violent offenses and
imprisoned in a secret, subterranean prison for almost two years.  It waas
broadcast on the POV series in 1990.  The distributor for rental and
purchase is Fox/Lorber Associates, Inc., 432 Park Ave. South, NYC 10016.
Phone (212) 686-6777.
 
Karen Hallett  [log in to unmask]